XML 286 R142.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Financial Risk Management - Disclosure of Customer Finance Fair Value Reconciliation (Parenthetical) (Detail) - SEK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Customer Finance Reconciliation [Abstract] |  |  |
Revaluation gain selling and administrative expenses | kr 6 |  |
Revaluation loss selling and administrative expenses |  | kr 209 |
Net gain from revaluation of customer finance receivables | kr 6 |  |
Net loss from revaluation of customer finance receivables |  | kr 209 | kr 15

X
- Definition Disclosure of customer finance reconciliation. + References No definition available. + Details
Name: | eric_DisclosureOfCustomerFinanceReconciliationAbstract
Namespace Prefix: | eric_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net gain from revaluation of customer finance receivables. + References No definition available. + Details
Name: | eric_NetGainFromRevaluationOfCustomerFinanceReceivables
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net loss from revaluation of customer finance receivables. + References No definition available. + Details
Name: | eric_NetLossFromRevaluationOfCustomerFinanceReceivables
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revaluation gain selling and administrative expenses. + References No definition available. + Details
Name: | eric_RevaluationGainSellingAndAdministrativeExpenses
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Revaluation loss selling and administrative expenses. + References No definition available. + Details
Name: | eric_RevaluationLossSellingAndAdministrativeExpenses
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant